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Ex 5.1, 3 - Express in a+ ib : i-39 - Chapter 5 Class 11  - Ex 5.1

  1. Chapter 5 Class 11 Complex Numbers
  2. Serial order wise
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Ex5.1,3 Express the following in the form a+ ib : ๐‘–^(โˆ’39) ๐‘–^(โˆ’39) = 1/๐‘–^39 = 1/(ใ€–(๐‘–ใ€—^38) ร— ๐‘–) = 1/((๐‘–^2 )19 ร— ๐‘– ) Putting i 2 = โˆ’ 1 = 1/((โˆ’1) 19 ร— ๐‘–) = 1/("โˆ’" 1ร— ๐‘–) = 1/(โˆ’ ๐‘–) multiplying and dividing by โ€“ i = 1/(โˆ’ ๐‘–) ร— (โˆ’ ๐‘–)/(โˆ’ ๐‘–) = (โˆ’ ๐‘– )/( ๐‘–^2 ) Putting i 2 = โˆ’ 1 = (โˆ’ ๐‘– )/( (โˆ’1)) = ๐‘– = 0 + ๐‘–

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